Combined fuse-plug and circuit-closer.



I. F. VINDEMORE.

COMBINED FUSE PLUG AND OIBCUIT ULUBEB unicum! num un. 1,l nos.

908,174. Patented Dsc. 29; wos.

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F. F. VINDBMORE.

OOHBINBD FUSE PLUG AND OIEOUIT OLOBHB.

unicum! rma un. 1. 1m.

908,174. mem nw 29,1908.

I Ililll-IRBIT I.

WITNESSES INVENTOI? M /ndemore ATTORNEYS FREDERICK F." VINDEMORE,

PATENT OFFICE.

' "COMBINED FUSE-PLUG AAND CIRCUIT-01305123..

Specification of Letters Patent.

' Patented Dec; 29,' 1908.

Applicationled Hatch 7, 1908. Serial No. 19,682.

To all whom it many` concern:

-Be it known that LEBEDERICK F. 'VINDE- uonn, aictizen. of the UnitedStates and a resident of Fairvievwin the county ofr en s .and .StateofNewJersey, Ihave invente a new and-Improved Combined Fuse-Plug andCircuit-(208er, .of .which the :following 1s a full,..clear,. and exactdescription.

This invention relates to certain improve- 1o ments in; means forclosingwire wireburn out, the- \entire. plug may. beremoved,. the electromagnetsecured to a new 25 ph, .and the latter replaced in position.

' my improved construction 4promfide an electromagnet adjacent theplugand adapted tozbe operated by the elo of a secondary. :circuitTheroperatxon o the electroso magnet serves to'close the -'circuitadjacent the plug and :permit the'rpassage of the cur- `:trentthroughsaid. lugand its fuse.

Reference is to had to the accompany- .ing drawings, fo a part of thisspeci- 35 .catonjn whichue'- r characters of .refer- -..ence..-indicatecorrespondjngparts in all the .:Egureg-.andin-whic f- Figure 1=. isaoentral-.longitudinalsection through a device constructed in accordance4o withr-m invention. and sho diagramyuan -mangementof t -primary andsecondary circuits; Fig. 2 is e. section on thelinc 2e-2ofFig. 1; Fig. 3isawiew of theI innemend ofthe socket for receiving the plug, 4 -5together with .the mechanism for holding the =.same=in-place;.and Fig. 4is a. lan view of .oneorni4 csf-connecting membertween the :zphandzoneofthe main conductors.

thespeoic form-.of my deviceillue- 5c trated intheiaccompanyingdrawings, I em- :ploy: a base A of unsulatlng material and `adapted tobesecu-red in an'ly: suitableman- :.ner to the-.wall-.or he base 1sprol@vided withrtwortransverse. grooves for fre- 5t eeiving andsupporting the two main insulat- .inghconductors 1L and .12, and isalso-provided with a flange or wall 13 for se arating :the socket whichreceives the fuse 'p ug from said conductorsz so as to preventanyossibihty of short-circuitiug t edevice. a tthe opposlte side of' thecurved wall-13 from.said conductors, there is secured in place-a socket14, preferably formed of .sheet metalha'nd threaded to receive the plug15. 'Thesocket is rlgldly held in place, preferably .bywthe mechanismillustrated in detail in Fig: 3. '.lha inner end of the socket isprovided with inwardly-directed flanges 15., and ex .laterally into 4theopening in theoideothe socket and with. the. inner surfaces of thetwoflanges, is a clamping plate=.16. The plate is providedwith a central.aperture 17= and two smaller threaded apertures 18a in the portions.overlappiingn the im: es .-1'5. Two screws 19 exten outwardl m..theinner surface of thebase throng a portion thereof and through.the linges15% intmthe threaded apertures' 18 oftheisaid;-.clamping --plate Thelower end: 2010i the-clam plate is provided with an aperture. througwhich extends a-co mbined clampin screw and binding post 21, whichserves or. olding the claupixg.- plate tothe4 baseand also pernts1attacl'rrrifllent if erwire 2 tosd c ampmg ate.; soc et-14ist usrigi yheld in plltceA and electrically conneetedto the binding -post 21 andwire'22.

Screw-tlneaded into-.the socket -14- is the plug 15 dpreviouslyreferred-to. 'Ehebody .23 of sai plug is dpreferably formed of insulatmgmaterial, an encircling the lower portion thereof, which screws into thesoeket; is a shell or cov -24 osheet metal. :Extendlng outwardly t roughthe center of the l is a .tube of mediating-material 25, .whic 1s sscedfrom theouter wall toleaveen annular ber, within :which is;disposedmheuse 26. The fuse lttt-.one end iis-connected through an arture in the sidewall to the outer met casing 24,A and cormeeted atthe'other :end with a collar 27. at the inner exposed .end ofthelug. Extenthrought the tube-25 is aro l28, havi aco ar-29.carried .therebyadjacentthe co ar 27 -ot-the plug, andthe inner-end of the rodextends-beyond the eoll.lar through the aperture 1-7 of theclam g plate1-6 and through anaperture in the ase to the inner side thereof. Contactbetween the collar 29 or theA rodl2-8 with4 the clamping plate, isprevented by means of a disk 30" o =1nsulat' material within the socket`and between t e=co11ar-29 and the plate 16. The

rod 28 is longitudinally movable to brng the collar 29 into engagementwith the collar 27, but the two are normally held out of engagement witheach other by the action of a coil s ring 32 encircling the inner end ofthe rod. Sliiid rod is electrically connected to the c onductor ll b f aconnecting strip 33, against one end of w rich the spring 32 engages.The strip extends through an aperture in the base to the outer surfacethereof, and is there provided with a separate clamping plate 3.4,adapted to hold the conductor 11 to the strip upon the tightening of asuitable screw 35.

Encirclin the outer end of the plug 15, and prefers ly threaded to thebody thereof, there is provided a sheet metal casing 36, serving tosupportthe coils 37 of an electromagnet. The casing 36 preferably carnestwo arms 38, connected at their outer ends by a cross bar 39, whichlatter supports the ets in the proper osition. y adjust-- ing the bar 39longitudinally of the arms, the position of the magnets in respect tothe lug may be adjusted. At the outer end the rod 28, there is providedan armature 40, adjacent the ends of the cores of the electro ets. Thearmature is movable to and m the magnets, the movement in one directionbeing against the action of the spring 32 and serving to brin thecollars 27 and 29 into e ment wit each other and to close the circuit,tvhile the movement in the opposite direction is caused by thedenergizing of the magnet and tension of the sp 32.

The current livered throu h t-he conductors 11 and 12 may be used or orating any suitable device desired, as, for instance, the electric arclights 41. The wire 22 from the bin 0' 21 leads to one of the arclights, an t other is connected in any suitable manner to the conductor12, as, for instance through a wire 42, shown in dotted lines. heelectromagnets 37 are energized in any suitable manner, but referablyfrom a circuit of low otential, inc uding a battery 43, wires 44 an 45,and a switch 46.

My mechanism is especially designed for use 1n places where the presenceof the high tential current is objectionable, but where 1t is desired tofrequently turn on and oli the light, as, for instance, automatically bythe operating .of certain machine or mechanism. To mount a switch theelectric lighting or electric power circuit direct-l f on the machinemight result in accidente injury to the operator or injuriousl a'ect thework operated u n, but by closing the circuit thro h an c cctroma et andoperating the latter y a current of ow potential, the wires and switchof the latter current ma be disposed at any point desired, withoutanger. il' liile the switch 46 is closed, the magnets 37 will beenergized and the amature drawn into engagement with the cores thereof.This will permit a passage of the current from the conductor 11 throu hthe strip 33 to the rod 28, collar 29, colar 27, fuse 26, casing 24,socket 14, and clamping plate 16 to the binding post 21. From the indingpost, the wire may pass to the lights, machinery, mechanism, or otherdevice to be operated, and thence back to the conductor 12. Should thefuse burn out, the armeture may be removed from the rod 28 and the plugscrewed out of its socket. A new fuse ma be readily inserted and thedevice i'eturne( to its original position.

If it is desired to close the high potential circuit for an suitable lenh of time and it is not desire to employ t ie secondary circuit, or incase the seconda circuit is broken or out of order, the p ug may bescrewed into the socket until the collar 27 firmly cngagcs with thecollar 29 and the circuit will closed inde .ndent of the armature 40.The normal istance between the two collars may be controlled at will byvarying the distance to which the plug is screwed into its socket.

The device may be used in various diierent positions or with variousdifferent mechanisms, but I contemplate particularly using the highpotential circuit for lighting purposes in connection with cop or otherphotographic o rations, and mount the switch 46 on t camera or otherphotographic apparatus, so that when the arts of t c latter are in roperposition, the hts will be turned on, ut as soon as the sensitized plateor ground glass screen is removed from the camera, the secondary circuitwill be broken at the switch 46 and the lightswill be immediately turnedoi.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. In combination, a base, a. member including a fuse and dctachablysecured to said base, a circuit-closing member, and an electromav'netcarried by said detachable member for operating said circuit-closingmember.

2. In combination, a base, a plug detachably secured thereto andincluding a fuse, an electromagnet carried by said plu and means wherebythe ener 'zing of said e ectromagnet closes the circuit through saidfuse.

3. In combination, a base, a plug screwthreaded thereto and including anannular bod and a central tube a fuse intermediate sai body and tube, anelectromalgnet carried by said plug, a rod extending t irough said tube,an armature for said magnet and operatively connected to said rod,whereby t 1o energizing of the magnet moves said rod longitudinally, andmeans carried b said rod for closing a circuit through said seupon theenergizing of the magnet.

4. In combination, a base, a plug detachably secured thereto, a collarcarried by said plug adjacent the inner end thereof, a rod exten throughsaid pl and having means a ted to engage wit said collar to close an eectric circuit, an electroma. et carried by said plug at its outer end,an an armature for sald magnet connected to said rod for movin thelatter to close the circuit. 5. In com ination, a bese having a threadedsocket, a plu threaded into said socket and including a acircuit-closing member carried by said plug and Within sai socket, andan operatintrlc-od for said circuit closer and extendi ugh said plug tothe outer end thereo 6. In combination, a base, a member including afuse and detachably secured to said base, a circuit-closing memberwithin said base and beneath said detachable member, and an cperatinrodfor said circuit closer and extending t ugh said first-mentioned member.

7. In combination, a base, a lug detachabl secured thereto a circuit coser within sai base and beneath said plug, and an electrom et carriedby said plug for operating said circuit closer.

8. In combination, a base, a plug detachably secured thereto, a collarcarried by said plug adjacent the inner ond and forming a. portion of anelectric circuit, a collar earned ly the plug at the outer end thereofan e ectroma et supported from said last mention collar, and a circuitcloser Within the base and beneath the plug and adapted S5 to beoperated by said electromagnet.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

FREDERIGK F. VINDEMORE.

Witnesses:

CLAIR W. FAIBBANK, Evenmin B. MAnsHALL.

